#Detect what kind of system we're on
ifeq ($(OS), Windows_NT)
	UNAME:=Windows
else
	UNAME:=$(shell uname -s) 
endif

ifeq ($(UNAME), Windows)
	EXE_EXT=.exe
	STA_LIB_EXT=.a
	DYN_LIB_EXT=.dll
	CMAKE_TYPE="MinGW Makefiles"
	CMAKE_FLAGS=-G $(CMAKE_TYPE) -DCMAKE_SH="CMAKE_SH-NOTFOUND"
endif

ifeq ($(UNAME), Linux)
	EXE_EXT=
	STA_LIB_EXT=.a
	DYN_LIB_EXT=.so
	CMAKE_TYPE="Unix Makefiles"
	CMAKE_FLAGS= -G $(CMAKE_TYPE)
endif

BIN_DIR=bin
BUILD_DIR=build
SRC_DIR=src
LIB_DIR=lib
DOC_DIR=doc

CLIENTNAME=client
SERVERNAME=server
MASTERNAME=#masterserver
BINS=

EX_PRE = brokengine_
EX_PARTS = $(CLIENTNAME) $(SERVERNAME) $(MASTERNAME)

NAMES = $(EX_PARTS:%=$(EX_PRE)%)
BINS+= $(foreach part,$(EX_PARTS),$(BIN_DIR)/$(part)/bin/$(EX_PRE)$(part)$(EXE_EXT))
BUILDS = $(EX_PARTS:%=$(BUILD_DIR)/%)
SRC_DIRS = $(EX_PARTS:%=$(SRC_DIR)/%)

CXX?=g++
MKDIR?=mkdir
RM?=rm -f
ECHO?=echo

LLUADIR=$(LIB_DIR)/luajit
LIRRDIR=$(LIB_DIR)/irrlicht
LBULDIR=$(LIB_DIR)/bullet
LNANDIR=$(LIB_DIR)/nanomsg

#Include directories
ILUADIR=$(LLUADIR)/src
IIRRDIR=$(LIRRDIR)/include
IBULDIR=$(LBULDIR)/src
INANDIR=$(LNANDIR)/src
ISHADIR=src
INCLUDE_PATHS=-I$(ILUADIR) -I$(IIRRDIR) -I$(IBULDIR) -I$(INANDIR) -I$(ISHADIR)
#library directories

CXXFLAGS+=$(INCLUDE_PATHS)

CXXFLAGS+=-Llib

#Libraries
#static libs
LIB_S_LUA=lib/libluajit.a
LIB_S_IRR=lib/libIrrlicht.a
LIB_S_BCO=lib/libBulletCollision.a
LIB_S_BDY=lib/libBulletDynamics.a
LIB_S_BLM=lib/libLinearMath.a
LIB_S_NAN=lib/libnanomsg.a

#dynamic libraries
LIB_D_LUA=lib/lua51$(DYN_LIB_EXT)
LIB_D_IRR=lib/Irrlicht$(DYN_LIB_EXT)
# Bullet cannot be built dynamically
LIB_D_BCO=$(LIB_S_BCO)
LIB_D_BDY=$(LIB_S_BDY)
LIB_D_BLM=$(LIB_S_BLM)
LIB_D_NAN=lib/libnanomsg$(DYN_LIB_EXT)

CLIENT_DLLS=Irrlicht libnanomsg lua51
SERVER_DLLS=libnanomsg lua51
ifeq ($(DEBUG),true)
	LIB_OBJS = $(LIB_D_LUA) $(LIB_D_IRR) $(LIB_D_BCO) $(LIB_D_BDY) $(LIB_D_BLM) $(LIB_D_NAN)
	BINS+=$(CLIENT_DLLS:%=$(BIN_DIR)/$(CLIENTNAME)/bin/%$(DYN_LIB_EXT)) $(SERVER_DLLS:%=$(BIN_DIR)/$(SERVERNAME)/bin/%$(DYN_LIB_EXT))
else
	LIB_OBJS = $(LIB_S_LUA) $(LIB_S_IRR) $(LIB_S_BCO) $(LIB_S_BDY) $(LIB_S_BLM) $(LIB_S_NAN)
endif

# Libraries
#order matters!
CLIENT_LIBS=-lBulletDynamics -lBulletCollision -lLinearMath -lIrrlicht -lnanomsg
SERVER_LIBS=-lBulletDynamics -lBulletCollision -lLinearMath -lnanomsg
#LIBS=-lBulletDynamics -lBulletCollision -lLinearMath -lIrrlicht -lnanomsg
ifeq ($(UNAME),Windows)
	CLIENT_LIBS+=-lOpenGL32
else
	CLIENT_LIBS+=-lGL
endif
ifeq ($(DEBUG),true)
	CLIENT_LIBS+=-llua51
	SERVER_LIBS+=-llua51
else
	CLIENT_LIBS+=-lluajit
	SERVER_LIBS+=-lluajit
endif

#can't compile with -std=c++11 because irrlicht will complain
#LDFLAGS+=$(LIBS)
ifeq ($(DEBUG), true)

else
	CXXFLAGS += -static $(INCLUDE_PATHS) -D_IRR_STATIC_LIB_ -DNN_STATIC_LIB
endif
S_LDFLAGS= $(SERVER_LIBS)
C_LDFLAGS= $(CLIENT_LIBS)
ifeq ($(UNAME),Windows)
	C_LDFLAGS += -mwindows -lwinmm
	ifeq ($(DEBUG),true)
	
	else
		C_LDFLAGS += -lws2_32 -lmswsock -ladvapi32
		S_LDFLAGS += -lws2_32 -lmswsock -ladvapi32
	endif
endif

ifeq ($(DEBUG),true)
	ifeq ($(UNAME),Windows)
		C_LDFLAGS+=-Wl,-subsystem,console
	endif
endif

ifeq ($(DEBUG),true)
	CXXFLAGS+=-O0 -g -Wall -Werror
else
	CXXFLAGS+=-O3
endif

FSYSTEM_FOLDERS = lua_api phys util lua_api/irr lua_api/phys lua_api/gui lua_api/scene lua_api/video
CLIENT_BUILD_FOLDERS = $(FSYSTEM_FOLDERS:%=$(BUILD_DIR)/$(CLIENTNAME)/%)

all : $(BINS)
	@echo "Done"

SHARED_CLIENT_FILES = lua_api/common phys/physcommon lua_api/phys/bphysbox util/hashmap lua_api/stream lua_api/load_net
SHARED_CLIENT_OBJS = $(SHARED_CLIENT_FILES:%=$(BUILD_DIR)/$(CLIENTNAME)/%.o)

# The client-side only stuff
LAPI_GUI = iguibutton iguicheckbox iguielement iguiimage iguilabel iguiskin iguiutil iguiwindow
LAPI_PHYS = bphysmodel cbphysbox
LAPI_SCENE = icamera igeneric ilight imesh
LAPI_VIDEO = iimage itexture smaterial
LAPI_LOAD = load_gui load_game load_scene load_phys load_video
LAPI_OBJS_T = $(LAPI_GUI:%=gui/%.o) $(LAPI_PHYS:%=phys/%.o) $(LAPI_SCENE:%=scene/%.o) $(LAPI_VIDEO:%=video/%.o)
LAPI_OBJS = $(LAPI_OBJS_T:%=$(BUILD_DIR)/$(CLIENTNAME)/lua_api/%) $(LAPI_LOAD:%=$(BUILD_DIR)/$(CLIENTNAME)/lua_api/%.o)
CLIENT_FILES = initdevice menuhandeler callbackhandeler
CLIENT_SRCS = $(CLIENT_FILES:%=$(BUILD_DIR)/$(CLIENTNAME)/%.o) $(LAPI_OBJS)
CLIENT_OBJS = $(BUILD_DIR)/$(CLIENTNAME)/main.o $(CLIENT_SRCS) $(SHARED_CLIENT_OBJS) 

#Compile the client
$(BIN_DIR)/$(CLIENTNAME)/bin/$(EX_PRE)$(CLIENTNAME)$(EXE_EXT) : $(CLIENT_OBJS) $(LIB_OBJS)
	@echo "Building binary $@"
	@$(CXX) $(CXXFLAGS) -o $@ $^ $(LDFLAGS) $(C_LDFLAGS) $(LIB_OBJS) # -Wl,--verbose

# does not have .hpp associated
$(BUILD_DIR)/$(CLIENTNAME)/main.o : $(SRC_DIR)/client/main.cpp
	@$(CXX) $(CXXFLAGS) -c -o $@ $^

$(CLIENT_SRCS) : $(BUILD_DIR)/$(CLIENTNAME)/%.o : src/client/%.cpp $(SRC_DIR)/client/%.hpp
	@echo "[CLIENT] CXX $<"
	@$(CXX) $(CXXFLAGS) -c -o $@ $<

$(SHARED_CLIENT_OBJS) : $(BUILD_DIR)/$(CLIENTNAME)/%.o : src/shared/%.cpp $(SRC_DIR)/shared/%.hpp
	@echo "[CLIENT] CXX $<"
	@$(CXX) $(CXXFLAGS) -c -o $@ $<

#compile server
SERVER_FILES =
SHARED_SERVER_FILES= util/hashmap lua_api/common phys/physcommon lua_api/load_net lua_api/load_phys lua_api/phys/bphysbox lua_api/stream
SHARED_SERVER_OBJS=$(SHARED_SERVER_FILES:%=$(BUILD_DIR)/$(SERVERNAME)/%.o)
SERVER_OBJS = $(SERVER_FILES:%=$(SERVER_BUILD_DIR)/%.o) $(SHARED_SERVER_OBJS) $(BUILD_DIR)/$(SERVERNAME)/main.o

$(BIN_DIR)/$(SERVERNAME)/bin/$(EX_PRE)$(SERVERNAME)$(EXE_EXT) : $(SERVER_OBJS) $(LIB_OBJS)
	@echo "Building binary $^"
	@$(CXX) $(CXXFLAGS) -o $@ $^ $(LDFLAGS) $(S_LDFLAGS)

# Special, main does not have a .hpp associated with it
$(BUILD_DIR)/$(SERVERNAME)/main.o : $(SRC_DIR)/server/main.cpp
	@echo "[SERVER] CXX $<"
	@$(CXX) $(CXXFLAGS) -c -o $@ $^

$(SHARED_SERVER_OBJS) : $(BUILD_DIR)/$(SERVERNAME)/%.o : $(SRC_DIR)/shared/%.cpp $(SRC_DIR)/shared/%.hpp
	@echo "[SERVER] CXX $<"
	@$(CXX) $(CXXFLAGS) -c -o $@ $<

#compile libraries
$(LIBLUA) : $(ILUADIR)/Makefile
	@echo "Could not find $(LIBLUA), rebuilding"
	cd $(ILUADIR) && $(MAKE) "BUILDMODE= static"
	cp $(ILUADIR)/libluajit.a lib

IRRMAKEFLAGS=
IRRMADELIB=
ifeq ($(DEBUG),true)
	IRRMAKEFLAGS+=NDEBUG=1
endif
ifeq ($(UNAME), Windows)
	ifeq ($(DEBUG),true)
		IRRMAKEFLAGS+=dynamiclib_win32
		IRRMADELIB=$(LIRRDIR)/bin/Win32-gcc
	else
		IRRMAKEFLAGS=staticlib_win32
		IRRMADELIB=$(LIRRDIR)/lib/Win32-gcc
	endif
else
	IRRMADELIB=$(LIRRDIR)/lib/Linux
endif

# Library - Irrlicht
$(LIB_S_IRR) : $(IRRMADELIB)/libIrrlicht.a
	cp $^ $@

$(IRRMADELIB)/libIrrlicht.a : $(LIRRDIR)/source/Irrlicht/Makefile
	cd $(LIRRDIR)/source/Irrlicht && $(MAKE) $(IRRMAKEFLAGS)

$(LIB_D_IRR) : $(IRRMADELIB)/Irrlicht$(DYN_LIB_EXT)
	cp $^ $@

$(BIN_DIR)/$(CLIENTNAME)/bin/Irrlicht$(DYN_LIB_EXT) : $(IRRMADELIB)/Irrlicht$(DYN_LIB_EXT)
	cp $^ $@

$(IRRMADELIB)/lib/Irrlicht$(DYN_LIB_EXT) : $(LIRRDIR)/source/Irrlicht/Makefile
	cd $(LIRRDIR)/source/Irrlicht && $(MAKE) $(IRRMAKEFLAGS)

# Library - Lua
# Client
$(BIN_DIR)/$(CLIENTNAME)/bin/lua51$(DYN_LIB_EXT) : $(LIB_D_LUA)
	cp $^ $@

# Server
$(BIN_DIR)/$(SERVERNAME)/bin/lua51$(DYN_LIB_EXT) : $(LIB_D_LUA)
	cp $^ $@

$(LLUADIR)/src/libluajit$(STA_LIB_EXT) : $(LLUADIR)/src/Makefile
	cd $(LLUADIR)/src && make "BUILDMODE= static"

$(LIB_S_LUA) : $(LLUADIR)/src/libluajit$(STA_LIB_EXT)
	cp $^ $@

$(LLUADIR)/src/lua51$(DYN_LIB_EXT) : $(LLUADIR)/src/Makefile
	cd $(LLUADIR)/src && make "BUILDMODE= dynamic"

$(LIB_D_LUA) : $(LLUADIR)/src/lua51$(DYN_LIB_EXT)
	cp $^ $@

# Library - Bullet
$(LBULDIR)/lib/libBulletCollision.a : $(LBULDIR)/Makefile
	cd $(LBULDIR) && make BulletCollision

$(LBULDIR)/lib/libBulletDynamics.a : $(LBULDIR)/Makefile
	cd $(LBULDIR) && make BulletDynamics

$(LBULDIR)/lib/libLinearMath.a : $(LBULDIR)/Makefile
	cd $(LBULDIR) && make LinearMath

$(LIB_D_BCO) : $(LBULDIR)/lib/libBulletCollision.a
	cp $^ $@

$(LIB_D_BDY) : $(LBULDIR)/lib/libBulletDynamics.a
	cp $^ $@

$(LIB_D_BLM) : $(LBULDIR)/lib/libLinearMath.a
	cp $^ $@

$(LBULDIR)/Makefile : $(LBULDIR)/CMakeLists.txt
	cd $(LBULDIR) && cmake $(CMAKE_FLAGS) -DBUILD_EXTRAS=off -DBUILD_DEMOS=off

# Library - Nanomsg
$(BIN_DIR)/$(CLIENTNAME)/bin/libnanomsg$(DYN_LIB_EXT) : $(LIB_D_NAN)
	cp $^ $@

$(LIB_D_NAN) : $(LNANDIR)/dyn_lib/libnanomsg$(DYN_LIB_EXT)
	cp $^ $@

$(LNANDIR)/dyn_lib/libnanomsg$(DYN_LIB_EXT) : $(LNANDIR)/dyn_lib/Makefile
	cd $(LNANDIR)/dyn_lib/ && $(MAKE) nanomsg

$(LNANDIR)/dyn_lib/Makefile : $(LNANDIR)/CMakeLists.txt $(LNANDIR)/dyn_lib
	cd $(LNANDIR)/dyn_lib && cmake $(CMAKE_FLAGS) ../

$(LNANDIR)/dyn_lib :
	mkdir $(LNANDIR)/dyn_lib

$(LNANDIR)/dyn_lib/libnanomsg.dll.a : $(LNANDIR)/dyn_lib/Makefile
	cd $(LNANDIR)/dyn_lib && $(MAKE) nanomsg

$(LIB_S_NAN) : $(LNANDIR)/dyn_lib/libnanomsg.dll.a
	cp $^ $@

#compile & run tests
test: $(TEST_PATH)test_stream $(TEST_PATH)test_phys
	@$(ECHO) "Testing stream : "
	@./$(TEST_PATH)test_stream
	@$(ECHO) "Testing physics: "
	@./$(TEST_PATH)test_phys

$(TEST_PATH)test_stream : $(TEST_SRC)test_streams.cpp $(SHARED_SRC)/lua_api/stream.cpp $(SHARED_SRC)/lua_api/stream.hpp
	@$(CC) $(CFLAGS) -o $(TEST_PATH)test_stream $(TEST_SRC)test_streams.cpp $(SHARED_SRC)/lua_api/stream.cpp $(SHARED_SRC)/lua_api/stream.hpp

$(TEST_PATH)test_phys : $(TEST_SRC)test_phys.cpp
	$(CC) $(CFLAGS) -o $(TEST_PATH)test_phys $(TEST_SRC)test_phys.cpp $(SLIBS)
#end tests

cleantest : 
	echo $(BUILDS:%=%/*.o)

clean :
	$(RM) $(CLIENT_OBJS)
	$(RM) $(SERVER_OBJS)
	$(RM) $(BINS)